Generator gasoline burner



Oct. 22, 1935.- v. BRUMBAUGH GENERATOR GASOLINE BURNER Filed June 26,1950 s Sheets-Sheet 1 Oct. 22, 1935. l V. BRUMBAUGH 7 2,

GENERATOR GASOLINE BURNER Filed June 26, 1950 9 Shets-Sheet 2 Oct. 22,1935.

I. V. BRUMBAUGH GENERATOR GASOLINE BURNER Filed June 26, 1930 9Sheets-Sheet 5 I Oct. 22, 1935. I I. V.JBRUMBAUGH 2,018,601

. GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet 4 Oct.22, 1935f 1. v. BRUMBAUGH 1 2,018,601 1 v GENERATOR GASOLINE BURNERFiled June 26, 1930 9 Sheets-Sheet 5 a; as 45 2 4 A) r L90 i i 0 62 fgyV l v 3.443% (31 I 5 -9.7/.

Oct. 22, 1935. 1 v BRUMBAUGH 1 2,018,601

GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet 6 Oct. 22,1935. v BRUMBAUGH 2,018,601

GENERATOR GASOLINE BURNER Filed June 26, 1950 I 9 Sheets-$heet '7 'Jfl62 5] (95 (91 g 6] SL v (i OctQZZ, 1935. 1. V. BRUMBAL JGH 2,018,601

GENERATOR GASOLINE BURNER Filed June 26, 1930 9 Sheets-Sheet s Oct. 22,1935. 1. v. BRUMBAUGH 1 2,018,601

- GENERATOR GASOLINE BURNER Filed June 26, 1950 v 9 Sheets-Sheet 9 i 1Aug;

Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE GENERATOR GASOLINEBURNER Application June 26, 1930, Serial No. 463,931

15 Clalms.

This invention relates to improvements in gen-v erator gasoline burnersand the principal objects of the invention will first be brieflyreferred to.

It is well known that all grades of gasoline are composed of light andheavy constituents, and

that in generating any grade into vapor, the lighter or more volatileconstituents are the first to be vaporized. I find that it is from theheaviest constituents that carbon is formed and accumulates andinterferes with the operation of the generator mechanism. Therefore oneof the objects of my present improvement is to hold the heaviestconstituents in the generator and prevent them from contacting with saidmechanism in the vaporization thereof and thereby substantially avoidthe well known interference of carbon with the operation of the burner.

Another object of the present invention is to so construct the generatorand its mechanism, that said mechanism is not subjected to the directheat of the flame that heats the generator, whereby the accumulation ofcarbon to interfere with its working is avoided.

It is also well known to those skilled in the art, that either anauxiliary burner or torch is used for initially heating the generator,and it is a further object of the present invention to avoid saidauxiliary means and at once produce an initial heating blue flame havingsubstantially greater heating eifect in the generator, thereby heatingit in less time and without disagreeable odor and smoking.

Further objects of the present improvement have not been thus fardescribed or referred to but they will be readily understood from thefollowing description.

In the accompanying drawings:

Figure 1 is a top plan view of a gasoline stove or range that embodiesmy improvements.

Fig. 2 is a diagrammatical view showing the several elements whichcomprise my new burner.

Fig. 3 is a top plan view of one of the top burners of my improved rangeand the mixing pipe shown in horizontal sectional view.

- are fed to the mixing tube of the burner.

Fig. 9 is a top plan view of the combined top burner and oven burner.

Fig. 10 is a side elevation of the top burner which also supplies vaporfor the oven burner.

Fig. 11 is a side elevation of the burner ID with the generator tube andthesurrounding housing therefor removed.

Fig. 12 is a horizontal sectional view through the top burner that alsosupplies vapor to the oven burner.

Fig. 13 is a horizontal sectional view through the top burner, thegenerator tube and surrounding housing removed.

Fig. 14. is a detached perspective view of the generator tube and itssupporting housing. is Fig. 15 is a detached perspective view of thehousing 43.

' Referring to the drawings in which I indicates a burner havingconnected therewith a suitable mixing tube 2. This mixing tubecommunicates with the interior of the burner I through suitable opening3. This mixing tube is located as here shown at the rear side of theburner and it curves around to the left side of the said burner and isprovided with a head-like portion 4. This headlike portion is providedwith a suitable air inlet 5, and passing into this head-like structureis the gasoline nozzle 6. A suitable gasoline tank 1 is located at oneside of the stove frame 8 which is shown in Figure 1 in dotted lines.This gasoline 130 tank is supplied with gasoline through a suitable capopening 9 and air is forced into this tank by means of a suitable pumpIII that is connected with the said tank by a pipe I l The'mixing tube 2therefore constitutes what may be aptly termed as a manifold throughwhich the mixed fuel and air flows to theseveral burners.

The air fed through this pipe I I to the tank is controlled by asuitable valve I2 placed in the upper end of a tubular section I3. Whenthe 40 tank is to be supplied with air this valve I2 is turned upwarduntil its valve is unseated when air will pass into the said tank. Alsopassing into the tank 'I is a tubular member I4 that has its lower endI5 adjacent the bottom of said tank. A pipe IB is connected with thistubular portion I4 outside of the said tank and a suitable valve I'Icontrols the flow of gasoline to the said pipe I6. It will be understoodthat the gasoline being under air pressure it will be forced through thelower end I5 of the tubular member I 4 and into the pipe I6. This pipe I6 communicates with the generating tube I8 and this generator in turncommunicates with the gasoline nozzle 6 that feeds for initial startingthe atomized gasoline and air through an opening l9 into the mix- 4|(Fig. 8') which is in communication through mg chamber 2. An air pipe 20has its outlet end 2| communicating with the restricted portion 22 ofthe nozzle 6 and its inlet end 23 communicating with the tubular portionl3 at a point below the line through the nozzle when it is on its seat21. The stem 28 that carries this valve is provided with ascrew-threaded part 29 that engages with a screw-threaded part 30 on thetubular portion 3| that is connected with the nozzle l9. 4 The outer endof this stem 28 is provided with a handle 32 whereby the valve may bemoved backward and forward within the tubular portion 3|.

Attention is called to the extension 33 of the' valve26 that passesthrough the restricted por tion 22, and projecting from this stem 33 isa needle valve 34 that operates in connection with the nozzle openingl9. This nozzle portion [9 is preferably Inade separate from the tubularmember 3| and is screwed in its extremity asfshown at 35. The burner isprovided at its underside with a depending portion 35 that haslongitudinal slots 31, and this depending portion forms a subfire forheating the generator l8 that is detachably supportedunder the burnerand extends at an angle parallel with the sub-burner 36. This sub-burnercommunicates with the mixing tube2 so that the said sub-flre'bumer 36 issupplied from the mixing tube through the openings '3 and 39 as shown inFigure 6. It there- V to the said sub-fire burner 31.

As shown the generator l8 (Fig. 7) is inclined upwardly from its inletend 40 to its outlet end the opening 42 with the tubular portion 3| thatoarries'the gasoline nozzle 6. For the purpose of supporting thisgenerator and holding it' in this inclined position a suitable housing43 is provided through which the generator |8Vpasses as shown in Figure7. The vertical ends of this housing 43 are detachably' connected bycotter" pins 44 that pass through the ears 45 of the housing and theburner. This inclination is'very important and its operation will bereferred to further on in this description. This housing 43 serves asmeans'ior confining the heat from the sub-fire flamearound thes'aidgenerator by means of its vertical wall'43' and at the same timeserves as end walls provided with open ended vertical slots 43whichreceive the tube |3 of the generator. outwardly extendingperforated ears 43 are located at'the upper ends of the said end wallsand these ears are provided with perforations through which the cotterpin 44 passes as shown in Figurefi. These ears 43 are in separatedrelation so that they rest at the inner side of the ears 45 of theburner. A side wall 43" also forms a part of the said housing 43. 7

Attention is called to the construction of the end 4 of the mixingchamber 2. This end of the 5 mixing chamber communicates with the burnerl as before stated and its lower wall 48 declines gradually to'a pocket49. This pocket 49 has one end of a pipe 59 communicating with the saidpocket and the opposite end of the pipe is con--10 nected with asuitable reservoir 5| that for convenience is shown located at the rearside of the stove. The object and function of this pocket and the pipe52 that connects it with the reservoir 5| and this reservoir will beexplained pres- 15 ently.

The pocket 49 is to receive the condensed gasoline produced from themixture of gasoline mist and air and which is conveyed through the pipe52 to the tank 5|. A vertically arranged cham- :0 her 53 is connected bya pipe 54wi'th the bottom of the tank 5|. A float 55 is located in thecham ber 53 which has a stem 58 connected with it and projecting throughthe top of the chamber 53. This chamber 53 is located in a convenientplace 95 for the operator to observewhen the tank 5| is full of thecondensed gasoline. When this point is reached'in the operation of theburner the operator by removing the drain plug 51 located in the bottomof the chamber 53 can empty the 50' gasoline from the tank 5|. 7

The pipe 52 connected with the upper portion of the tank 5| is providedwith a trap 58 located therein at suitable'point between the said tankand the pockets 49. The object of this trap is to 85 provide a seal forthe gasoline vapor flowing from the nozzle 5 sothat there will be'noescape of this gasoline vapor to the tank 5| when the burner is in fulloperation. It will be understood that after the generator and burnerareheated up 4.0 there will be no condensed'gasoline flowing to the pockets49 and hence no condensed gasoline flowing to the drain tank 5|. In theevent of but one generator being in operation it is necessary that eachof the connections 52 be provided with a trap 45 58 and 58' locatedbetween the generators and r the reservoir 5| to which the said pipesare connected. Otherwise there would be an escape of vapor from thegenerator in operation to the burner not in operation. The arrangementhere 50 shown prevents that result. 7, V V V V For the purpose ofindicating the air pressure in the gasoline supply tank 1 a suitable airpressure indicator 59 is attached to the tank. It

will be understood that the tank must be sup- '55" plied with a certainamount of air pressure to force the gasoline from the tank I to thenozzle 6 and this indicator will show to the operator when there is theproper amount of pressure in the tank for that purpose.

By reference to Figure 1 it will be observed that the top burner portioncomprises the said burner a similar burner l and two burners and I andalso an oven burner I. The gasoline generated by the burner suppliesvapor for the burners and I while the burner supplies gasoline vapor forthe oven burner I. The burners and l are provided with supply tubes 60and 6| and these two supply tubes are joined by a cross supply tube .62,which in turn is connected with the mixing tube 2 of the burner by atube 63, while the oven burner i has a sup- 7 ply tube 64. thatcommunicates with the mixing tube 4' of the burner I will first explainthe operation of the burnerrfffi I and then will explain the operationof the other burners.

Initial. starting of burner 1 The operator first closes the gasolinevalve I1 and then opens the air valve I2 and by means of the pump I thetank is supplied with the proper air pressure for operation, abouttwenty pounds. The generator valve 26 being closed through the medium ofits handle 32 the gasoline flows from the tank I to the pipe I6 andthrough the pipe to the generator I8. The parts of the stove all beingin the positions indicated then to start operation of the burner I theoperator opens the air valve 24 which feeds air through the pipe 20 tothe outlet 2| and to the nozzle 6. Then while this air valve is open theoperator opens the valve 26 and gasoline is forced through therestricted portion 22 to the nozzle 6, the air and gasoline being mixedto some extent before it reaches the nozzle 6 produces a liquid mist.This mixture of gasoline mist and air flows into the mixing chamber 4where additional air is drawn into the head 4 of the mixing tube throughthe opening 5. At this time the burner and generator of course are notheated. The operator through the medium of the handles which control theair valve 24 and the gasoline valve 26 can immediately cause a coldmixture (which will burn with a blue flame) which will pass through themixing tube to the burner I and this cold mixture is lighted and at thesame time this cold mixture which supplies a blue flame is fed to thesub-fire burner 36 and this cold mixture flows through the slots 31 ofthe subfire burner. In fact this cold mixture is supplied simultaneouslyto the burner I and the sub-fire 36. Hence when the burner I is lightedfrom above, this cold mixture from the sub-fire instantly lights at thesame time through the opening 65. Therefore the burner I and thesub-fire burner 36 are both producing a blue flame from this coldmixture. It is well known that this blue flame is much hotter than if itwere yellow so that in about forty seconds time the burner, thegenerator and their parts are sufllciently heated to produce thegasoline vapor to the sub-fire and also the burner I and at this timethe air valve 24 will be closed and the burner will continue to operatenormally producing the usual blue flame at the burner I. During theoperation of the burner -I the sub-fire burner continues to burn and thegenerator I8 is kept hot by this sub-fire flame.

In the initial starting of the burner and before the burner, generatorand their parts become heated up from the flame, the mixture of air andgasoline causes a mist to flow through the opening I 9 (Fig. 8) into themixing chamber 4 in which additional air flows through the opening 5 tothis misty mixture. All parts of the burner and the generator and themixing tube being cold at this time there is some condensation of thismisty mixture. In order to take care of the condensation of the gasolinecaused by striking the cold parts with which it comes in contact Iprovide the mixing tube 2 with a. pocket 49 that depends from the lowerWall and the lower wall 48 of this mixing tube is inclined toward thesaid pocket so that any condensed gasoline finds its way to this pocketand is drained; through the pipe 52 to the drain tank 5I. stood ofcourse that when the parts of the burner and generator are suifioientlyheated then condensation of the gasoline ceases. This pipe 52 It will beunder is provided-with, a trap 58 that serves the purpose beforementioned of preventing the flow of gasoline vapor from the mixing tube2 to the tank 5 I.

Purpose, function and operation of the inclined generator 5 In Figure 7the generator I8 is shown in an inclined position to which brief mentionhas heretotore been made. The reason for this arrangement of thegenerator I8 will be stated as follows. 10 When the burner is startedthe generator is of course full of gasoline throughout its length andthis causes a visible spray made up of a mixture of gasoline and air toflow through the nozzle opening I9. When the burner becomes heated andis normally operating then the gasoline in the generator forms a levelsubstantially at a inv Figure 7'. That is to say, the. gasoline is underpressure in the tank, say twenty pounds, and substantially twenty poundsof pressure is produced in the part b of the generator so that thepressure at b is substantially equal to the pressure in the tank 1 andthe gasoline then reaches its level in the generator which is found tobe substantially the point a of'Figure 7. Hence the raw gasoline (afterthe. main burner I is heated) never reaches the gasoline valve 26, itsreduced portion 33, its needle 34 and its nozzle opening I 9 when thegenerator is in full operation. I find that in this arrangement theaccumulation of carbon in the generator and in the gas valve tube 3| andaround the screw threads 29 and the nozzle and parts cooperating withthe nozzle is exceedingly small and. that the burner can be operatedsubstantially without any obstruction occurring in these parts. 35.

I believe this to be caused by reason of the fact that gasoline iscomposed of course of lighter and heavier particles. These lighterparticles are formed into a gas under the warm air conditions and infact these lighter particles will evaporate 4.0. under atmospherictemperature while the heaviest particles of the gasoline requireconsiderable heat in order to vaporize it. The lighter particles fillthe portion b of the generator and the lighter portions which are formedinto gas and which 451- reach the valve 26 and the screw thread 29 andthe nozzle. and its parts substantially do not form into carbon. In facta cracking or complete vaporization of the gasoline is necessary to formany appreciable forming of carbon. Hence the above mentioned parts aresubstantially free from carbon accumulation.

I also believe from experiments made by me that substantially all of theheavy part of the gasoline which causes carbon to form is held for a:time in solution by the raw gasoline in the generator tube I8. Theseheavy particles being continuously mixed with the lighter raw gasolineparticles, the heavy particles, as stated, are held substantially insolution. These are some of the reasons which I believe enable myimproved burner to operate for such long periods 01 time without anyclogging of the generator. By plac ing this generator on an incline asshown I am able to hold, some raw gasoline in the generator while itsupper end is free from this raw gasoline when the generator, the burner,and their parts become sufliciently hot to cause the generated vapor tobe supplied to the mixing tube 2.

In fact the following is clearly visible in the operation of my burner.viz: When the burner is being started a mist of gasoline can be clearlyseen as issuing from the nozzle 6 when the generator, burner and itsparts are cold, but when these parts become sufiiciently heated for theI have not operated this burner sufficiently long up to the presenttime-to determine positively whether an unobstructed generator tubeplaced at 7 an inclination as here shown will operate substantiallyindefinitely without becoming clogged up with carbon but I havesatisfied myself that it can be operated for a sufficiently long periodof time to enable it to work under the ordinary periods of time that thestove is in operation for a period of several years without becomingclogged up.

A generator tube without any obstructing material' in it such as hereshown, can be readily cleaned of any obstructing carbon by having itslower end 40 capable of being opened and closed by a screw 66. Byremoving this screw 66, an instrument can be readily inserted in thegenerator and substantially clean it of any obstruction therein. V

Again I call attention to the fact that in burn- V ers heretofore in usethe gasoline valve 26, the

nozzle 6 and parts thereconnected are subjected to the direct heat fromthe burner or the subfire, when a sub-fire is provided. By this it is imeant that usually the tubular portion 31 is the generator whichcontains the gasoline valve 26 and is directly in the flame of theburner or directly in the flame of'the sub-fire. It will be observedthat in my improved construction here shown this is not true and thatthe only heat to which the valve 26, the nozzle etc. are subjected isheat by induction through contact of the generator with the upper end 3|of the valve 26. In this way the parts above mentioned arenot subject tothe intense heat that they are subjected to in the usual construction ofgenerating burners.

In the usual construction of generating burners the passage inside ofthe generator tube averous'than is the gasoline in the supply tank Iwhich has passed the underwriters. The principal object of the tank 5|is to prevent this condensed gasoline from clogging in the burnerstructure from any cause whatever and thus be more or less dangerous inthehands of a user. If it should bepreferred the pipe 52 may be extendedto a point removed from the stove.

That is to say, the tank 5| could be placed in the cellar, or in factthe pipe 52 in some instances might be extended to the outside of thebuilding and allowed to drain oil in the ground. However theconstruction herein shown is the preferred construction and removes thedanger that would be occasioned by the condensed gasoline gathering inthe parts of the burner, as for instance one first using the stove andtherefore un- 7 line to be accumulated in the burner.

accustomed to it, might make several attempts to start it which mightcause the condensed gaso- When the stove is finally lighted afterseveral attempts the burning of this accumulated gasoline might startleone unaccustomed to its operation and therefore by some wrong operationmight lead to a fire. It is to prevent any such occurence that the draintank 5| is provided. In the operation of the burner this tank is foundto be ample for receiving the condensed gasoline. However to prevent theaccumulation of this gasoline I '5 provide the communicating chamber 53so that if by any chance there should be an accumulation of thecondensed gasoline it can be drawn from the tank 53 through the draincook 51.

I have also shown the air passage 20 con- 10 nected with the gasolinetank 1 as the practical way of supplying air which has severaladvantages. I will state however that it is not essential to theoperation of the burner that the compressed air be taken from the tankcontaining gasoline, because the operation of the burner would besubstantially the same if this air were taken from a tank that does notcontain any gasoline and therefore in this case containing no gasolinevapor. It is essential however that the air be compressed so that itwill issue under pressure together with the gasoline through the nozzle6. The supply of air frorn'the gasoline tank 1 as stated has severaladvantages. For instance if an additional tank for the air be pro- 1'pressureas the gasoline tank in order that the operation hereindescribed be the result. By taking the air from the tank I the pressureon the gasoline is always equal to the air pressure and therefore theabove unsatisfactory result is not present.

In my improved burner'herein described the 4,9 mixture of air andgasoline in the form of a mist is burned until the sub-fire heatsthegenerator sufficiently to vaporize the gasoline and produce a blue flameindependent of the supply of air and at this time the air supply is cutoff.

As stated most manufacturers utilize the pipe 3| which contains thevalve and its several constructions as a generator. In'this instance thestem of the valve is in the region of the sub-fire and there is aclearance between the stem of the 60 valve and the inside wall of thegenerator tube of about one thirty-second of an inch. Most manufacturersplace such generators in a horizontal position and it only requires afew weeks to an extreme of a few months to cause clogging of thegenerator because of the carbon that is formed and the corrosion thatoccurs. The threads of the valve of generators of this type corrode andcorrosion and carbon pack around the threads and cause the stem to turnquite hard and in fact very frequently cause a twisting of the stem andstop or substantially stop the operation of the burner.

In my construction the generated gas does not pass over the threads ofthe valve as the 05 valve housing is not in the generator tube and in myconstruction the additional and separate generator tube is connectednear the valve seat. Also in my construction of generator the threads'ofthe valve are not corroded nor does carbon pack in the threadssufficiently to cause hard turning.

' It will be observed that the air connection in my construction ofgenerator leads from the gasoline tank 1 and is joined to the valvehousing near the orifice I9 and in the construction shown the air 15connection is between the said orifice I9 and the valve seat 21. In myconstruction it is important to have the air connection to the valvenear the outlet orifice I9 and that is why the connection is made to thevalve housing instead of to the generator. In other words I have foundit unsatisfactory to connect the air line from the tank I to thegasoline line near the lower end 01 the generator I8.

Attention is also called to the fact that in my construction the airpassageway 2| is larger than the orifice I9 and this is so constructedin order to avoid any possibility of clogging the air passage.

The restriction 22 varies in size depending upon the length of the saidpassageway and the size of the fittings. This restriction of course issmaller than the air passage and the passageway leading to the valve 26and the valve seat 21.

It will be observed from the construction which has thus far beendescribed that in my improved generator construction the valve 26 andthe valve seat 21 are both outside of the region of the subfire, whichplays wholly on the generator tube I8. Therefore in this improvedconstruction the valve is much cooler and is heated only by conductionand radiated heat and the valve should last indefinitely.. When thevalve forms a part of the generator as in prior structures it soondeteriorates and soon is clogged with carbon and therefore the operationoi the burner is wholly unsatisfactory if not absolutely stopped.

It is rather diflicult to obtain a packing material. that will stand theheat to which it is subjected and by reason of this fact I have inserteda tube 3I between the valve 26 and the packing gland 61. This places thepacking gland near the front of the stove which is removed from the heatof the sub-fire as well as the heat of the burner so that the valve stemmay be freely turned at all times.

It will also be noted that this improved generator burner is so madethat the condensed gasoline can not drain into the sub-fire portion ofthe burner as the bottom of the mixing tube 2 is inclined and drainsinto the pocket 49 and immediately passes to the said drain tank 5I.Therefore it is impossible for any condensed gasoline whatever to reachthe burner. It would be most impractical to make a burner to be operatedby my improved method of priming the generator ii the condensed gasolinecould reach the burner and thus drip from the burner. Such operationwould be manifestly dangerous.

I find that if the burner should be made so that the condensed gasolinecould drain into what I call the burner head it would be evaporated morerapidly and the vapor would not be sufilciently mixed with air and ayellow flame would occur at the burner slots above the condensedgasoline. The length of time it would take to completely evaporate thecondensed gasoline in the above construction, of course, depends uponthe design of the burner and also upon how much gasoline had beencondensed and had reached the burner.

In the instance of the several attempts heretofore mentioned in primingthe burner it would naturally take a fairly large receptacle to hold thecondensed gasoline. In my construction where the gasoline is at oncedrained away, failure to properly prime the burner can not cause anytrouble to a person failing to properly prime the generator, and he canimmediately proceed to try again. Also, if for some reason the generatorshould not be completely closed and the gasoline should leak to theburner, with my construction it would firstflow into the pocket 49 andbe at once drainedaway. to the drain tank 5 I.

Having. explained the. operation of the burner I, and that the tube 2has communication 60.- and IiI withthe burners I and I I wish now to.state that these burners are not provided with any generators whateversince the generator I8 provides suflicient vapor for the burner I andthe burners'l and, I if they are to be operated.

When it is desired to operate either the burner I or I it is firstnecessary that the burner I be operated. The. gasoline vapor in themixing tube 2 is conveyed as stated to: the tubes 60 and BI,andthisgasoline vapor is controlled by a handle 68 that carries. at itsinner end a valve 69 that controlsthe flow or the vapor from the crosstube 62 to the tube. 60 that feeds it to the burner I. This is a well,known valve and its operation will be understood without furtherexplanation.

A similar handle. 10 has at its inner end a valve similar to the. valve69 that controls the flow of vapor from the cross tube 62 to the burnerI Hence. the operation or these burners can be readi- 1y controlled bythese valves and since these burners will not be put into operationuntil the burner I is in. full operationthere will be no appreciablecondensation. of the vapor and hence there will bev no gasoline in theseburners to be taken care of and hence they'are not connected with thedrain chamber 5|.

Top burner amd connection with oven burner The burner I, itsgenerator,its valve and its mixing tube are all constructed substantially asdescribed in connection with the burner I. However. the. burner I has aspecial construction differing. from the burner I. In describing thisburner attention is. particularly directed to Figures 9,12 and 13. Inthe first instance I will explain that the mixing tube 2 of this burnerI has the extension 4 and projecting from this extension. is a shorttubular section II that communicates with the burner and controls theflow of gasoline vapor from the extension 4 to this burner. The burnernow being described which is shown in Figure 12 has a wall portion I2provided with an opening I3 that isin communication with the tubularextension II or the said mixing tube. This opening "establishescommunication between the tubularsection II and the burner openings 8|.Also this tubular extension II' has an opening I I which communicateswith a passageway I5 and the. passageway I5 establishes communicationbetween the tubular section II and the sub-fire burner 36, which subfireburner is constructed exactly as the sub-fire burner of burner I. Hencethe sub-fire is always provided with vapor that plays on the generatorI8 for heating it and generating vapor from the gasoline therein. Thecommunication I5 only communicates with the sub-fire and not with theslotted burner portions of the burner I. The opening I3 is controlled bya. valve I6 that has a handle 1! connected with it so that by turningthis handle the valve can be opened and closed as may be. required. Thistubular connection II is provided. with another opening I8 and thisopening is controlled by a valve I9 which is similar to the valve I6 andit carries a handle 80 for operatingthe valve and thus controlling thepassage I8.

The burner I also has a pocket 49 and with this pocket 49 the tube 52 isconnected so that any condensed gasoline is collected in this pocket andplained in connection with the burner I. Therefore the burner I beingin'iull operation and it should be desired to operate the oven burner I,it is only necessary to open the valve 19 when vapor will flow throughthe passageway 18 to the tubular connection 64 and then to the burner I.Should it be desired not to operate theburner I this can be doneby'simply closingthe valve 16. When this valve 16 is closed then thevapor flows through the passageway 14 to the sub-fire burner 36 so thatvapor continues to be produced and fed to the mixing tubesZ, 4, tubularsection II to the oven burner. By this arrangement of valves 16 and 19either the burner I' can be operated independently oi the oven burner orthe oven burner lkcan be operated independently oithe burner l' or bothburners can be cut oil and only the sub-fire burner for heating thegenerator will be operating. It is understood of course that the supplyof vapor generated in the generator is controlled by the valve 32.

I am aware that it is not new to provide a connection between a topburner of a range and an oven burner and-control this by means ofvalves. However it is believed to be new to have a sub-fire suppliedwith vaporindependently 01 either the top burner or the oven burner andto control either one or both burners without affecting the operation ofthe sub-fire burner since the sub-fire communication isindependent orthecommunication with either the oven burner or the top burner I. V i

By rei'erence'to Figure 13 it is shown that the communication 14 iswith'a chamber 15 that is separate from the burner openings thereaboveand that the chamber I5 supplies vapor only to the sub-fire burner 36.

Construction of the burners Theburners l, I, I and l have their upperportions comprised of six projecting slotted members 8 l which havetheir inner ends separated as shown at 82 (Fig. 3) thereby forming inthe upper part of the burners a substantially rectangular opening inFigure 6 the sub-fire burner has its upper portion 84 inclined therebyforming an inclined bottom for about half of the width of the opening65. The inner vertical side or the sub-fire burner 36 is curved inwardlysubstantially as is indicated at 85 and. the generator 18 is spaced fromthis curved jportio'n of the sub-fire burner as illustrated in Figure 6.Each of the slotted extensions 8| are also separated as shown at 86thereby forming right angle assageways across the burner.

These burners therefore produce a burner consistingof six angularseparated slotted extensions on their upper side and their inner endsseparated by an opening 65 the bottom of the opening closed at one sideby the sub-fire burner leaving the other side 81 open throughout theburner 5 for the upward passage of air to assist in the combustion ofthe gas of the burner. The burner l differs from the burner l in that ithas formed therein a vapor communication with the tubular member H ofthe mixing tube 2, the said com- 1 munication being located on the outerside of the burner. and it also has formed in the front side under oneof the slotted extensions 8| a passageway 89 that leads to the valve 16that is operatively connectedwith the handle 11 for con- 15 trolling theamount of vapor which passes to the passageway 89 between the slottedburner extensions 8I.

Each of the burners l and I has the slotted extensions 8| formingburners consisting of six 20 of said extensions.

From the foregoing description it will be seen that Ihave disclosed amethod of generating gas from gasoline which involves supporting the rawgasoline so that the heavy particles are held in 25 solution within thegenerator whereby there is no substantial accumulation of carbon tointerfere with the mechanism for controlling the flow of the vapor tothe burner.

My improved burner and new method of va- 30 porizing gasoline tosubstantially avoid the iormation of carbon and its interference withthe mechanism of the generator have been the result of work covering aconsiderable period of time. Based on a series of tests of this improvedmethod 35 of vaporizing gasoline I find in carrying out this new methodthat gasoline is supported in the generator tube as illustrated inFigure 7 with its maintained level about at the point a illustrated insaid figure. porized and the vapor fills the space b and the heaviestparticles are substantially at the surface of the gasoline and theheaviest particles are substantially mixed with the gasoline at the timethey are vaporized and by reason of this opera- 4'5 7 to believe thatthe above is substantially the result of my method here disclosed.Certain it is that the operation of this improved generator hasconvinced me that there is little or no accumulation of carbon, and thatcarbon is the result 7 of the vaporization of the heaviest particles ofthe gasoline.

In carrying out these tests I have operated my generators continuouslyday and night over a period of 2000 to 4000 hours, which is equivalent 7to a two to four year period or time that the generator would be used indomestic cooking operations and without any interference whatever fromthe accumulation of carbon. Heretofore in the usual type of generators,as stated herein,

carbon is formed quite rapidly and substantially 7 The lighter particlesare va- 0 tact with any of the mechanism that controls the flow of thegasoline to the burner, except when priming, when the raw gasolineserves to clean and flush the valve mechanism.

It will also be observed that I have discovered a new method ofinitially priming the burner by a blue flame and preventing theaccumulation of condensed gasoline vapor by causing it to escape,thereby preventing what otherwise would be a yellow flame in the initialstarting of the burner.

I therefore will claim the above several methods in addition to themechanisms for carrying out these several methods of generating andhandling gasoline and vapor generated from the gasoline.

I have described in considerable detail the improvements but I wish itunderstood that I do not limit myself beyond a fair interpretation ofthe appended claims.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. The combination with a gasoline burner of means for producing aninitial heating blue flame comprising a burner housing having dependingtherefrom a sub-fire housing, a generator tube located under the burnerand adjacent the subfire housing to be heated thereby, a pressuregasoline supply connected with the inlet end of the generator, a valvemechanism connected with the outlet end of the generator, an airpressure tube having its inlet connected with said supply above thenormal level of the gasoline in said supply, its outlet havingcommunication with the said valve mechanism, a manifold communicatingwith the said burner and the said sub-fire housing, the inlet end of themanifold in communication with the outlet end of the valve mechanism,whereby a blue initial heating flame for the generator is produced.

2. An improved gasoline stove comprising a main burner, a sub-fireburner adjacent the main burner, a manifold in communication with saidmain burner and also with said sub-fire burner, a generator tubeadjacent said sub-fire burner and heated thereby, said generator tubehaving a fuel outlet in communication with said manifold, a gasolinesupply for said generator tube, a valve controlling the fuel from saidgenerator tube to the manifold, and an air pressure supply communicatingdirectly with said fuel supply from the generator tube, both said fueland air supply jointly fed to said manifold, whereby an initial coldmixture of fuel and air is fed to the manifold and thence to the mainburners for producing an initial blue flame, for the purpose set forth.

3. An improved gasoline stove comprising a main burner, a sub-fireburner, a manifold having communication with said burners, a generatortube adjacent the said sub-fire burner and heated thereby, means forproducing an immediate blue flame from a cold mixture of fuel and airfor preheating purposes, said means consisting of said generator tube,said generator tube having an outlet in communication with the manifold,a valve mechanism controlling said generator outlet, said valvemechanism located out of direct contact with the said sub-fire burner,whereby accumulated carbon is prevented.

4. An improved gasoline stove comprising a main burner, a sub-fireburner, a manifold communicating with said burners, means for producingan immediate blue flame from a cold mixture of fuel and air forinitially operating purposes said means comprising a generator tubelocated adjacent said sub-fire burner and heated thereby and having afuel outlet, a valve mechanism for controlling the fuel from saidgenerator tube to said manifold, said valve mechanism located apart fromand out of direct contact with the heat of said sub-fire burner, wherebyaccumulated carbon is prevented.

5. An improved gasoline stove comprising a main burner having avertically arranged air pa..- sage communicating above and below saidburner, a sub-fire burner located below said passageway and incommunication with said main burner, a generator tube located adjacentto the sub-fire burner and heated thereby, a manifold havingcommunication with said burners, said generator tube having a combinedair pressure and fuel outlet in communication with the manifold, a valvemechanism for controlling said air and fuel under pressure directly andjointly from the said generator tube outlet, the parts operating toproduce an initial blue flame for the main burner and lighting thesub-fire through the said passageway, the parts operating for thepurpose set forth.

6. An improved gasoline stove comprising a main burner, a sub-fireburner communicating with and located adjacent the said main burner, agenerator tube adjacent the said sub-fire burner and heated thereby, amanifold having a fuel outlet communicating with said main burner, thegenerator tube having a fuel outlet communicating with said manifold, apressure air supply commimicating directly with said generator fueloutlet, a valve controlling said generator outlet whereby said mainburner and said sub-fire burner both receive an initial cold mixture offuel and air and whereby when said cold mixture of one of the burners islighted the other burner is lighted thereby. i

'7. An improved gasoline stove comprising a main burner, a sub-fireburner communicating. with said main burner, a manifold communicatingwith said burners, a generator tube adjacent said sub-fire burner andheated thereby, said generator tube having an outlet communicating withsaid manifold, a gasoline supply for said generator tube, a valvecontrolling said generator fuel outlet, a pressure air supply fed to thefuel outlet of the generator tube at a point in advance of the fueloutlet thereby directly mixing said air with the said fuel, whereby aninitial cold mixture is supplied to the manifold and therethrough to thesaid burners for initially lighting and heating the said burners.

8. An improved gasoline stove comprising a main burner, a subfire burnercommunicating therewith, a generator tube adjacent said subfire burnerand heated thereby, a gasoline supply for said generator tube, saidgenerator tube having a fuel outlet and an air pressure supply incommunication with the said fuel outlet, a

valve mechanism controlling said fuel and air pressure from the saidgenerator outlet, a manifold adapted to receive said mixture of fuel andair from the generator outlet and said manifold also communicating withthe main burner and said sub-fire burner whereby a cold mixture as itissues from said burner produces an initial blue flame, for the purposeset forth.

9. An improved gasoline stove comprising a main burner, a sub-fireburner communicating with the said main burner, a generator tubeadjacent said sub-fire burner and heated thereby, said generator tubehaving a fuel outlet, an air 8 V r r 7 pressure supply directlycommunicating withsaid outlet end of the generator tube for causing amixture of air and fuel in advance of said generator outlet, a gasolinesupply for the generator and a dual valve controlling mechanism for theoutlet end of the generator, said dual valve controlling the flow ofsaid air and gasoline therefrom, a manifold receiving said mixture in acold- V with said main burner, a generator tube adjacent said sub-fireburner and heated thereby, a gasoline supply for said generator, thegenerator having a fuel outlet, anair pressure inlet tube incommunication with the outlet end of the generator tube whereby there isproduced a cold mixture composed of air and fuel in advance of its finaloutlet, said generator-provided with a valve adapted to control the flowof said fuel and air therefrom, a manifold havingan inlet end locatedtoreceive said cold mixture of air and fuel and said inlet end'having anopening to receive a further air supply for said mixture, said mixtureconveyed through the manifold to said burners, whereby said cold mixtureas it flows from the burners may be lighted for initial and temporaryoperation thereof, the parts 7 operating as described.

gasoline burner having 11. An improved means producing a cold mixture offuel and air "heated thereby, a manifold having its inlet adjacent saidgenerator outletto receive fuel therefrom, ,said manifold alsocommunicating with said'burners, a dual valve construction in the outletend of the generator, an air pressure supply communicating with theoutlet end of said generator tube, said dual valve controlling the flowof air thereto and the passage of fuel and air therefrom to produce acold mixture, said cold mixture flowing through the manifold to saidburners, whereby "a blue flame from said cold mixture cantbe ignited forproducing a temporary heating flame, the parts combined for the purposeset forth. 7

12. An improved gasoline stove comprising a main burner and a sub-fireburner having communication with the main burner, a generator tubelocated adjacent the sub-fire burner and directly heated thereby, thegenerator tube having a fuel outlet located at one end thereof andextending at an angle to the said generator tube, a valve forcontrolling the fuel outlet located also at an angle to the saidgenerator tube there- 7,5

by placing the valve out of direct contact with the heat of the sub-fireburner, a manifold communicating with said generator fuel outlet and galso with said burners, whereby the valve mech' anism is located out ofdirect contact with them heat of the burners and preventing anaccumulation of carbon.

13. An improved gasoline stove comprising a main burner, a generatortube under said main 7 burner having an outlet, said main burner havl5ing arhollow downwardly projecting portion located at one side of thesaid generator tube the lower end of said hollow projection providedwith burner openings opposite said generator tube thereby constituting asub-fire burner, a manifold having its inlet end receiving gasoline fromsaid generator outlet, said manifold also communicating with the mainburnerand through said downwardly projecting hollow member with saidsub-fire burner, the parts adapted to operate as set forth.

14. An improved gasoline burner supplying'a temporary cold mixture ofgasoline mist and air for producing an initial heating flame, comprisinga main burner, a sub-fire burner thereunder 80 and communicating withthe main burner, a generator tube located under said main burner andadjacent the sub-fire and heated thereby, a manifold receiving fuel fromsaid generator tube and in communication with said burners, a valvecontrolling said generator fuel to said manifold, whereby a cold mistcomposed of a mixture of gasoline and air'is fed to the said manifoldand through it to said burners for furnish-' ing an initial blue flamefor heating the said 40 generator tube, the parts arranged as described.

15. A construction for producing an initial blue flame from a coldmixture of fuel mist and air under pressure, comprising a main burner, asub-fire burner under. the main burner and in communication therewith, agenerator tube under the main burner and located adjacent the saidsub-fire burner and heated thereby, said generator tube having a fueloutletand also an inlet for the air pressure, means for supplying saidair pressure to the said generator tube outlet, a valve controlling thesaid generator outlet thereby producing a mixture of mist and air, amanifold receiving the said mixture of mist and air, the manifold havingcommunication with 5 the said burners, whereby a temporary initial blueflame is produced for initially heating said burners.

I. VERNON BRUMBAUGH.

